Hello Nickolas, A public URL of your application suffering from this issue would enable reproduction.
If you attach some of the images that trigger the error, you'll facilitate debugging further. Any other details you deem relevant may prove of great help as well. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/b6fadddf-9810-4211-a3cc-0445716bdd02%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
